diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index b7bcfa035..1896b3492 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -230,6 +230,14 @@ if (PKG_CONFIG_FOUND AND WITH_HARDSUBX)
   set (EXTRA_INCLUDES ${EXTRA_INCLUDES} ${SWSCALE_INCLUDE_DIRS})
 
   set (CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -DENABLE_HARDSUBX")
+  pkg_check_modules (TESSERACT REQUIRED tesseract)
+  pkg_check_modules (LEPTONICA REQUIRED lept)
+
+  set (EXTRA_LIBS ${EXTRA_LIBS} ${TESSERACT_LIBRARIES})
+  set (EXTRA_LIBS ${EXTRA_LIBS} ${LEPTONICA_LIBRARIES})
+
+  set (EXTRA_INCLUDES ${EXTRA_INCLUDES} ${TESSERACT_INCLUDE_DIRS})
+  set (EXTRA_INCLUDES ${EXTRA_INCLUDES} ${LEPTONICA_INCLUDE_DIRS})
 endif (PKG_CONFIG_FOUND AND WITH_HARDSUBX)
 
 add_executable (ccextractor ${SOURCEFILE} ${FREETYPE_SOURCE} ${UTF8PROC_SOURCE})